Starting with commit 2a847be412, we are ready to install TDE CMake macros as a standalone package when the files will be placed in the system CMake folder. That's why I prepared CMake rules for installing files – as a standalone package.
There is deliberately omitted installation of Apidox scripts because they depend on the common admin module, while requiring the presence of Makefile.am files in source codes. Therefore, they require a fundamental change in functionality and is not desirable that they are installed in the current form in the system CMake directory. Therefore, modules using Apidox scripts such as tdelibs, tdebase, tdepim will continue to require CMake as a submodule.